/* ============================================================
 * PatDraftix · Landing Page styles  (lp- prefix)
 * 复用 styles.css 的 design tokens；本文件只承载官网营销页样式。
 * ============================================================ */

/* ---------- Global overrides ---------- */
html { scroll-behavior: smooth; }
body { background: #0b1426; }
section[id] { scroll-margin-top: 64px; }
#cta { scroll-margin-top: 0; }
.lp-dark { background: #0b1426; color: #cbd5e1; }
.lp-hero-title, .lp-section-head h2 { font-family: "Fraunces", "Songti SC", "Source Han Serif SC", "Noto Serif SC", Georgia, serif; font-weight: 600; font-optical-sizing: auto; }

/* ---------- Layout primitives ---------- */
.lp-container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}
.lp-section { padding: clamp(56px, 8vw, 96px) 0; background: var(--bg-surface); }
.lp-section.lp-soft { background: var(--bg-page); }
.lp-section.lp-dark { background: #0b1426; }
.lp-soft { background: var(--bg-page); }

.lp-section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto clamp(40px, 5vw, 60px);
}
.lp-section-head h2 {
  font-size: clamp(26px, 3vw, 34px);
  letter-spacing: -0.4px;
  line-height: 1.25;
  margin-bottom: 14px;
}
.lp-dark .lp-section-head h2 { color: #fff; }
.lp-section-sub {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-3);
  margin: 0;
}
.lp-dark .lp-section-sub { color: #94a3b8; }

.lp-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.5px;
  color: #c9bef0;
  background: rgba(107, 88, 198, 0.12);
  border: 1px solid rgba(107, 88, 198, 0.28);
}
.lp-eyebrow::before {
  content: '';
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ai-accent);
}

/* ---------- Brand mark ---------- */
.lp-brand { display: flex; align-items: center; gap: 11px; }
.lp-brand .brand-mark {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand-primary), var(--ai-accent));
  display: grid; place-items: center;
  color: #fff; font-weight: 700; font-size: 15px;
  flex-shrink: 0;
}
.lp-brand .brand-name {
  color: #fff; font-weight: 600; font-size: 18px;
  letter-spacing: 0.2px;
}
.lp-brand .brand-name b { font-weight: 600; }
.lp-tag {
  color: #94a3b8; font-size: 11px;
  padding: 2px 8px; border: 1px solid #334155;
  border-radius: 999px;
}

/* ---------- Nav ---------- */
.lp-nav {
  position: sticky; top: 0; z-index: 50;
  background: #0b1426;
  transition: background .25s ease, border-color .25s ease;
  border-bottom: 1px solid transparent;
}
.lp-nav .lp-container {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.lp-nav.scrolled {
  background: rgba(11, 20, 38, 0.94);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}
.lp-nav-links { display: flex; align-items: center; gap: 28px; }
.lp-nav-links a {
  color: #cbd5e1; font-size: 14px; font-weight: 500;
  text-decoration: none; transition: color .15s;
}
.lp-nav-links a:hover { color: #fff; text-decoration: none; }
.lp-nav-links .btn-primary { color: #fff; }
.lp-nav-login {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: #e2e8f0;
}
.lp-nav-login:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  color: #fff;
  text-decoration: none;
}

/* ---------- Hero ---------- */
.lp-hero {
  background:
    radial-gradient(ellipse at 18% -10%, rgba(107, 88, 198, 0.26), transparent 52%),
    radial-gradient(ellipse at 88% 110%, rgba(74, 67, 150, 0.32), transparent 50%),
    #0b1426;
  padding: clamp(72px, 11vw, 120px) 0 clamp(64px, 9vw, 100px);
  overflow: hidden;
  position: relative;
}
.lp-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 56px;
  align-items: center;
}
.lp-hero-copy { max-width: 560px; }
.lp-hero-title {
  color: #fff;
  font-size: clamp(32px, 4.4vw, 50px);
  line-height: 1.12;
  letter-spacing: -0.8px;
  margin: 22px 0 20px;
}
.lp-hero-sub {
  color: #94a3b8;
  font-size: 17px;
  line-height: 1.72;
  max-width: 530px;
  margin: 0 0 32px;
}
.lp-hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
/* 橙色强调按钮：用于最高优先级的转化 CTA */
.lp-btn-orange,
.lp-btn-orange:visited {
  background: var(--accent-orange);
  border: 1px solid var(--accent-orange);
  color: #fff;
}
.lp-btn-orange:hover {
  background: var(--accent-orange-hover);
  border-color: var(--accent-orange-hover);
  color: #fff;
  text-decoration: none;
}

.lp-btn-ghost-dark {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #e2e8f0;
}
.lp-btn-ghost-dark:hover {
  background: rgba(255, 255, 255, 0.09);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.28);
}

.lp-hero-trust {
  display: flex; flex-wrap: wrap;
  align-items: center;
  gap: 14px 26px;
  margin-top: 38px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.lp-trust-item {
  font-size: 13px; color: #94a3b8;
  display: flex; align-items: baseline; gap: 7px;
}
.lp-trust-item strong {
  color: #fff; font-weight: 700; font-size: 17px;
  font-feature-settings: "tnum";
}

/* ---------- Hero mockup ---------- */
.lp-hero-mock { perspective: 1800px; }
.lp-mock {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 36px 80px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.06);
  overflow: hidden;
  transform: perspective(1800px) rotateY(-6deg) rotateX(2deg);
  transform-origin: center center;
}
.lp-mock-bar {
  height: 36px;
  background: var(--bg-page);
  border-bottom: 1px solid var(--border-1);
  display: flex; align-items: center;
  padding: 0 13px; gap: 7px;
}
.lp-mock-dot { width: 10px; height: 10px; border-radius: 50%; }
.lp-mock-dot.r { background: #f87171; }
.lp-mock-dot.y { background: #fbbf24; }
.lp-mock-dot.g { background: #34d399; }
.lp-mock-file {
  margin-left: 10px; font-size: 11.5px; color: var(--text-3);
  font-weight: 500;
}
.lp-mock-file .lp-mock-pill {
  background: var(--brand-primary-soft); color: var(--brand-primary);
  padding: 1px 7px; border-radius: 999px; font-size: 10.5px;
  font-weight: 600; margin-left: 6px;
}
.lp-mock-body { display: grid; grid-template-columns: 1fr 238px; }

.lp-mock-doc {
  padding: 22px 24px;
  font-family: var(--font-serif);
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--text-1);
  min-height: 300px;
}
.lp-mock-doc-title {
  text-align: center;
  font-weight: 700;
  letter-spacing: 6px;
  font-size: 14px;
  margin-bottom: 18px;
  color: var(--text-1);
}
.lp-mock-claim { display: flex; gap: 10px; margin-bottom: 14px; }
.lp-mock-claim .cn { color: var(--text-3); font-weight: 600; flex-shrink: 0; }
.lp-mock-claim .cb { flex: 1; }
.lp-mock-doc strong {
  background: rgba(107, 88, 198, 0.12);
  font-weight: 600;
  padding: 0 3px; border-radius: 2px;
}
.lp-mock-doc em {
  font-style: normal;
  background: rgba(220, 38, 38, 0.12);
  padding: 0 2px;
  border-bottom: 2px solid var(--sev-high);
}
.lp-mock-doc em.amber {
  background: rgba(217, 119, 6, 0.12);
  border-bottom: 2px dashed var(--sev-mid);
}
.lp-mock-chip-ai {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 9.5px; font-weight: 700;
  color: var(--ai-accent);
  background: var(--ai-accent-soft);
  border: 1px solid var(--ai-accent-border);
  padding: 0 5px; border-radius: 999px;
  margin-left: 5px; vertical-align: 1.5px;
  letter-spacing: 0.3px;
}

.lp-mock-ai {
  border-left: 1px solid var(--border-1);
  background: #fff;
  padding: 13px;
}
.lp-mock-running {
  background: linear-gradient(135deg, var(--ai-accent-soft), #fff);
  border: 1px solid var(--ai-accent-border);
  border-radius: 8px;
  padding: 11px 12px;
  margin-bottom: 16px;
}
.lp-mock-running .mr-title {
  font-family: var(--font-sans);
  font-size: 12px; font-weight: 600; color: var(--text-1);
  display: flex; align-items: center; gap: 8px;
}
.lp-mock-spin {
  width: 13px; height: 13px; border-radius: 50%;
  border: 2px solid var(--ai-accent-border);
  border-top-color: var(--ai-accent);
  animation: lp-spin 0.8s linear infinite;
  flex-shrink: 0;
}
@keyframes lp-spin { to { transform: rotate(360deg); } }
.lp-mock-running .mr-prog {
  height: 4px; border-radius: 999px;
  background: var(--ai-accent-border);
  margin-top: 9px; overflow: hidden;
}
.lp-mock-running .mr-prog > i {
  display: block; height: 100%; width: 62%;
  background: var(--ai-accent); border-radius: 999px;
}

.lp-mock-group { margin-bottom: 13px; }
.lp-mock-group .mg-title {
  font-family: var(--font-sans);
  font-size: 10px; text-transform: uppercase; letter-spacing: 0.6px;
  color: var(--text-3); font-weight: 700;
  margin-bottom: 7px;
}
.lp-mock-btns { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.lp-mock-btn {
  font-family: var(--font-sans);
  background: var(--bg-soft);
  border: 1px solid var(--border-1);
  border-radius: 6px;
  padding: 7px 8px;
  font-size: 11px; font-weight: 500; color: var(--text-1);
  text-align: center;
}
.lp-mock-btn.primary {
  background: var(--ai-accent);
  border-color: var(--ai-accent);
  color: #fff; font-weight: 600;
  grid-column: 1 / -1;
}

.lp-mock-legend {
  display: flex; flex-wrap: wrap;
  gap: 10px 20px;
  margin-top: 20px;
  font-size: 12px; color: #94a3b8;
}
.lp-mock-legend span { display: inline-flex; align-items: center; gap: 7px; }
.lp-leg-sw {
  width: 16px; height: 11px; border-radius: 3px; display: inline-block;
}
.lp-leg-sw.purple { background: rgba(107, 88, 198, 0.4); }
.lp-leg-sw.amber {
  background: transparent;
  border-bottom: 2px dashed var(--sev-mid);
  height: 8px; border-radius: 0;
}

/* ---------- Features ---------- */
.lp-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.lp-feature-card {
  background: #fff;
  border: 1px solid var(--border-1);
  border-radius: var(--r-4);
  padding: 26px 24px;
  box-shadow: var(--sh-1);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.lp-feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--sh-3);
  border-color: var(--ai-accent-border);
}
.lp-fc-icon {
  width: 42px; height: 42px;
  border-radius: 10px;
  display: grid; place-items: center;
  font-size: 19px;
  margin-bottom: 16px;
}
.lp-fc-icon.ai { background: var(--ai-accent-soft); color: var(--ai-accent); }
.lp-fc-icon.brand { background: var(--brand-primary-soft); color: var(--brand-primary); }
.lp-fc-title { font-size: 16px; margin-bottom: 8px; color: var(--text-1); }
.lp-fc-desc { font-size: 13.5px; line-height: 1.65; color: var(--text-3); margin: 0; }
.lp-feature-more {
  text-align: center;
  margin: 32px 0 0;
  font-size: 14px; color: var(--text-3);
}
.lp-feature-more b { color: var(--text-2); font-weight: 600; }

/* ---------- Flow ---------- */
.lp-flow-steps {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0;
}
.lp-flow-step {
  position: relative;
  padding: 26px 18px 10px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.lp-flow-step::after {
  content: '';
  position: absolute;
  top: 44px; left: 50%; width: 100%;
  height: 2px;
  background: var(--border-2);
  z-index: 0;
}
.lp-flow-step:last-child::after { display: none; }
.lp-flow-step.gate { padding-top: 26px; }
.lp-step-num {
  position: relative; z-index: 1;
  width: 40px; height: 40px;
  border-radius: 50%;
  margin: 0 auto 16px;
  display: grid; place-items: center;
  font-weight: 700; font-size: 15px;
  color: #fff;
  background: linear-gradient(135deg, var(--brand-primary), var(--ai-accent));
  box-shadow: 0 0 0 5px var(--bg-page);
}
.lp-flow-step.gate .lp-step-num {
  background: #fff;
  color: var(--ai-accent);
  border: 2px solid var(--ai-accent);
  box-shadow: 0 0 0 5px var(--bg-page);
}
.lp-step-title { font-size: 14.5px; margin-bottom: 8px; color: var(--text-1); }
.lp-step-desc { font-size: 12.5px; line-height: 1.6; color: var(--text-3); margin: 0 0 14px; flex: 1; }
.lp-step-tag { font-size: 11px; margin-top: auto; }

/* ---------- Security ---------- */
.lp-security { position: relative; overflow: hidden; }
.lp-security::before {
  content: '';
  position: absolute; top: -120px; left: -60px;
  width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(107, 88, 198, 0.24), transparent 62%);
  pointer-events: none;
}
.lp-security::after {
  content: '';
  position: absolute; bottom: -140px; right: -60px;
  width: 460px; height: 460px;
  background: radial-gradient(circle, rgba(74, 67, 150, 0.28), transparent 62%);
  pointer-events: none;
}
.lp-security .lp-container { position: relative; z-index: 1; }
.lp-security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.lp-sec-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  padding: 22px 22px;
}
.lp-sec-icon {
  width: 36px; height: 36px; border-radius: 8px;
  display: grid; place-items: center;
  background: rgba(107, 88, 198, 0.18); color: #c9bef0;
  font-size: 17px; margin-bottom: 14px;
}
.lp-sec-item h3 { color: #fff; font-size: 15px; margin-bottom: 8px; }
.lp-sec-item p { color: #94a3b8; font-size: 13px; line-height: 1.65; margin: 0; }

/* ---------- Diff showcase ---------- */
.lp-diff-wrap {
  max-width: 900px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--border-1);
  border-radius: var(--r-4);
  box-shadow: var(--sh-3);
  overflow: hidden;
}
.lp-diff-bar {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 22px;
  background: var(--bg-page);
  border-bottom: 1px solid var(--border-1);
  font-size: 13px;
}
.lp-diff-bar .dv-file { font-weight: 600; color: var(--text-1); }
.lp-diff-bar .dv-ver {
  font-family: var(--font-mono);
  font-size: 11.5px; color: var(--text-3);
  background: var(--bg-soft); border: 1px solid var(--border-1);
  padding: 2px 8px; border-radius: 999px;
}
.lp-diff-stats { display: flex; gap: 16px; margin-left: auto; font-size: 12.5px; color: var(--text-3); }
.lp-diff-stats .ds { display: inline-flex; align-items: center; gap: 6px; }
.lp-diff-stats .ds .dot { width: 8px; height: 8px; border-radius: 50%; }
.lp-diff-stats .ds .dot.add { background: var(--status-green); }
.lp-diff-stats .ds .dot.del { background: var(--sev-high); }
.lp-diff-body {
  padding: 26px 28px;
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 2;
  color: var(--text-1);
}
.lp-diff-claim { position: relative; padding: 10px 0 10px 16px; border-left: 3px solid transparent; }
.lp-diff-claim + .lp-diff-claim { border-top: 1px dashed var(--border-1); }
.lp-diff-claim.mod { border-left-color: var(--ai-accent); background: rgba(107, 88, 198, 0.03); }
.lp-diff-claim .dc-num { font-weight: 700; color: var(--text-3); margin-right: 6px; }
.lp-diff-body ins {
  background: #dcfce7; color: #14532d;
  text-decoration: none; padding: 0 3px; border-radius: 2px;
  border-bottom: 1px solid var(--status-green);
}
.lp-diff-body del {
  background: #fee2e2; color: #7f1d1d;
  text-decoration: line-through; padding: 0 3px; border-radius: 2px;
}
.lp-diff-by {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 10px; font-weight: 700;
  padding: 1px 7px; border-radius: 999px;
  margin-left: 6px; vertical-align: 2px;
  letter-spacing: 0.3px;
}
.lp-diff-by.ai { background: var(--ai-accent-soft); color: var(--ai-accent); border: 1px solid var(--ai-accent-border); }
.lp-diff-by.human { background: var(--brand-primary-soft); color: var(--brand-primary); border: 1px solid #d6cdf3; }
.lp-diff-legend {
  display: flex; flex-wrap: wrap; gap: 10px 22px;
  justify-content: center;
  margin-top: 26px;
  font-size: 13px; color: var(--text-3);
}
.lp-diff-legend span { display: inline-flex; align-items: center; gap: 7px; }
.lp-diff-legend .lg-pill {
  font-family: var(--font-sans);
  font-size: 10px; font-weight: 700; padding: 1px 7px; border-radius: 999px;
}
.lp-diff-legend .lg-pill.ai { background: var(--ai-accent-soft); color: var(--ai-accent); }
.lp-diff-legend .lg-pill.human { background: var(--brand-primary-soft); color: var(--brand-primary); }

/* ---------- Pricing (复用 subscription.html 的 .plan-card 体系) ---------- */
.lp-plan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: stretch;
}
.plan-card {
  background: #fff;
  border: 1px solid var(--border-1);
  border-radius: var(--r-3);
  padding: 30px 26px;
  position: relative;
  display: flex;
  flex-direction: column;
}
.plan-card.popular {
  border-color: var(--ai-accent);
  box-shadow: 0 0 0 2px var(--ai-accent-soft), var(--sh-3);
}
.plan-card.popular::before {
  content: '推荐';
  position: absolute;
  top: -11px; left: 50%;
  transform: translateX(-50%);
  background: var(--ai-accent);
  color: #fff;
  padding: 3px 12px;
  border-radius: 999px;
  font-size: 11px; font-weight: 700; letter-spacing: 0.5px;
}
.plan-card .pl-name {
  font-size: 16px; font-weight: 600; color: var(--text-1);
  margin-bottom: 6px;
}
.plan-card .pl-desc {
  font-size: 13px; color: var(--text-3);
  min-height: 36px; line-height: 1.5;
}
.plan-card .pl-price {
  margin: 18px 0;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--border-1);
}
.plan-card .pl-num {
  font-size: 34px; font-weight: 700; color: var(--text-1);
  letter-spacing: -0.5px; line-height: 1;
  font-feature-settings: "tnum";
}
.plan-card .pl-unit { font-size: 13px; color: var(--text-3); margin-left: 4px; }
.plan-card .pl-custom { font-size: 24px; font-weight: 700; color: var(--text-1); }
.plan-card .pl-sub { color: var(--text-3); font-size: 12px; margin-top: 6px; }
.plan-card .pl-features {
  list-style: none; padding: 0; margin: 0 0 20px;
  font-size: 13px; line-height: 1.95; flex: 1;
}
.plan-card .pl-features li { padding-left: 22px; position: relative; color: var(--text-2); }
.plan-card .pl-features li::before {
  content: '✓'; position: absolute; left: 4px;
  color: var(--status-green); font-weight: 700;
}
.plan-card .pl-features li.disabled { color: var(--text-4); }
.plan-card .pl-features li.disabled::before { content: '×'; color: var(--text-4); }
.plan-card .pl-features li.highlight { color: var(--text-1); font-weight: 600; }
.plan-card .pl-cta {
  width: 100%; padding: 11px 0; border-radius: 8px;
  font-size: 14px; font-weight: 600; text-align: center;
  cursor: pointer;
  border: 1px solid var(--border-2);
  background: #fff; color: var(--text-1);
  text-decoration: none; transition: all 0.15s;
}
.plan-card .pl-cta:hover { background: var(--bg-soft); text-decoration: none; }
.plan-card.popular .pl-cta {
  background: var(--ai-accent); color: #fff; border-color: var(--ai-accent);
}
.plan-card.popular .pl-cta:hover { background: var(--ai-accent-hover); color: #fff; }
.lp-pricing-note {
  text-align: center;
  margin: 30px auto 0;
  max-width: 640px;
  font-size: 13px; color: var(--text-3);
  line-height: 1.6;
}

/* ---------- FAQ ---------- */
.lp-faq-list { max-width: 760px; margin: 0 auto; }
.lp-faq {
  border: 1px solid var(--border-1);
  border-radius: var(--r-3);
  background: #fff;
  margin-bottom: 12px;
  overflow: hidden;
}
.lp-faq summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 22px;
  font-size: 15px; font-weight: 600; color: var(--text-1);
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
}
.lp-faq summary::-webkit-details-marker { display: none; }
.lp-faq summary::after {
  content: '+';
  font-size: 20px; font-weight: 400; color: var(--text-3);
  flex-shrink: 0;
  transition: transform .2s;
}
.lp-faq[open] summary::after { content: '−'; }
.lp-faq[open] summary { border-bottom: 1px solid var(--border-1); }
.lp-faq .lp-faq-a {
  padding: 16px 22px 20px;
  font-size: 14px; line-height: 1.75; color: var(--text-2);
}
.lp-faq .lp-faq-a strong { color: var(--text-1); font-weight: 600; }

/* ---------- Final CTA ---------- */
.lp-final-cta {
  position: relative; overflow: hidden;
  text-align: center;
  background:
    radial-gradient(ellipse at 80% -10%, rgba(107, 88, 198, 0.26), transparent 52%),
    radial-gradient(ellipse at 15% 120%, rgba(74, 67, 150, 0.32), transparent 52%),
    #0b1426;
}
.lp-final-cta h2 { color: #fff; font-size: clamp(26px, 3.4vw, 38px); letter-spacing: -0.4px; }
.lp-final-cta p { color: #94a3b8; font-size: 16px; line-height: 1.7; max-width: 540px; margin: 14px auto 30px; }
.lp-cta-action { display: flex; justify-content: center; }
.lp-cta-fine { font-size: 12px; color: #64748b; margin: 18px auto 0; }
.lp-cta-fine .nb { white-space: nowrap; }

/* ---------- Footer ---------- */
.lp-footer { padding: 56px 0 36px; border-top: 1px solid rgba(255, 255, 255, 0.08); }
.lp-footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
.lp-footer-brand .brand-name { font-size: 16px; }
.lp-footer-tagline {
  color: #94a3b8; font-size: 13px; line-height: 1.65;
  margin: 14px 0 16px; max-width: 280px;
}
.lp-footer-pb { font-size: 11px; color: #98a3b5; }
.lp-footer-pb a { color: #94a3b8; }
.lp-footer-pb a:hover { color: #cbd5e1; }
.lp-footer-col h4 {
  color: #e2e8f0; font-size: 13px; font-weight: 600;
  margin-bottom: 14px;
}
.lp-footer-col ul { list-style: none; padding: 0; margin: 0; }
.lp-footer-col li { margin-bottom: 10px; }
.lp-footer-col a {
  color: #94a3b8; font-size: 13px; text-decoration: none;
  transition: color .15s;
}
.lp-footer-col a:hover { color: #cbd5e1; text-decoration: none; }
.lp-footer-social { display: flex; gap: 10px; margin-top: 20px; }
.lp-footer-social a { width: 34px; height: 34px; border-radius: 8px; display: grid; place-items: center; background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1); color: #94a3b8; transition: all .15s; }
.lp-footer-social a:hover { color: #fff; background: var(--ai-accent); border-color: var(--ai-accent); }
.lp-footer-social svg { width: 17px; height: 17px; display: block; }
.lp-footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex; flex-wrap: wrap; gap: 8px 24px;
  font-size: 12px; color: #98a3b5;
}
.lp-footer-bottom .lp-fb-trademark { max-width: 720px; line-height: 1.6; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .lp-hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .lp-hero-copy { max-width: 100%; }
  .lp-mock { transform: none; }
  .lp-hero-mock { max-width: 560px; }
  .lp-feature-grid { grid-template-columns: repeat(2, 1fr); }
  .lp-security-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 860px) {
  .lp-nav-links a:not(.btn) { display: none; }
  .lp-nav-login { display: none; }
  .lp-plan-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; gap: 24px; }
  .plan-card.popular { order: -1; }
  .lp-flow-steps { grid-template-columns: 1fr; gap: 8px; max-width: 460px; margin: 0 auto; }
  .lp-flow-step { display: grid; grid-template-columns: 40px 1fr; gap: 16px; text-align: left; padding: 12px 0; align-items: start; }
  .lp-flow-step::after { display: none; }
  .lp-step-num { margin: 0; }
  .lp-step-tag { justify-self: start; }
}
@media (max-width: 640px) {
  .lp-feature-grid { grid-template-columns: 1fr; }
  .lp-security-grid { grid-template-columns: 1fr; }
  .lp-mock-ai { display: none; }
  .lp-mock-body { grid-template-columns: 1fr; }
  .lp-hero-cta .btn { flex: 1; }
  .lp-footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .lp-footer-brand { grid-column: 1 / -1; }
}

/* ---------- 在线咨询气泡 ---------- */
.lp-chat { position: fixed; right: 24px; bottom: 24px; z-index: 60; }
.lp-chat-fab {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 18px; border: none; border-radius: 999px;
  background: var(--brand-primary); color: #fff;
  font-family: inherit; font-size: 14px; font-weight: 600;
  box-shadow: 0 8px 24px rgba(58, 38, 128, 0.35);
  cursor: pointer; transition: transform .15s, box-shadow .15s;
}
.lp-chat-fab:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(58, 38, 128, 0.42); }
.lp-chat-fab-ico { color: var(--accent-orange-light); font-size: 15px; }
.lp-chat.open .lp-chat-fab { display: none; }
.lp-chat-panel {
  display: none;
  width: 360px; max-width: calc(100vw - 32px);
  height: 520px; max-height: calc(100vh - 48px);
  background: #fff; border: 1px solid var(--border-1);
  border-radius: var(--r-4); overflow: hidden;
  box-shadow: 0 24px 60px rgba(10, 10, 10, 0.28);
  flex-direction: column;
}
.lp-chat.open .lp-chat-panel { display: flex; }